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Abstract

Eigenface recognition technique reserves limitations in achieving good performance. This includes the large-scale database required, its sensitivity to improper illumination, as well as to different expressions of a human face, and image background. This paper presents an efficient and accessible solution for some of these limitations by improving the database’s design. Face recognition accuracy has been enhanced via the inclusion of a modified version of the images in the database. Illumination and various face positions have been integrated into the already available small-scale database. Recognition is sensitive to the illuminated side of a face under consideration. Applying the proposed approach and choosing proper pre-processing values, has improved the system’s performance.

2. Face Recognition Techniques

Human face recognition has several applications in computer visions and image processing. However, the human face is a complex natural object that tends not to have easily (automatic) identified edges and features. Due to this, it is challenging to acquire a mathematical model of the face that can be used as prior knowledge when analyzing a particular image (O’Toole et al., 2007; Hiremath & Prabhakar 2006). This expands the effort of the face recognition issue and opens a way of raising new techniques and algorithms, aiming to achieve optimum performance. Many algorithms have been examined to attain worthy performance under various conditions (Raffaele, Dario, & Davide, 2002; Zhou et al., 2011; Turk, 2001). These algorithms may be classified in to three categorizations:

1.

Traditional algorithms: This refers to the identification of faces through the extractions of landmarks, or features, from an image of the subject's face. Popular recognition algorithms include Eigenface, Fisherface, the Hidden Markov model, and the neuronal motivated dynamic link matching.